Finding the Fourth Proportional to 690,631.14, 1,035,848.28 and 217,304.19
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Solution
The fourth proportional to 690,631.14, 1,035,848.28 and 217,304.19 is: 325,925.31
Step by Step Solution
- Step 1: Write the proportion equation
690,631.14 : 1,035,848.28 = 217,304.19 : x - Step 2: Convert to fraction form
690,631.14/1,035,848.28 = 217,304.19/x - Step 3: Cross multiply
690,631.14x = 1,035,848.28 × 217,304.19 - Step 4: Simplify right side
690,631.14x = 225,094,171,448.29 - Step 5: Solve for x
x = 225,094,171,448.29/690,631.14 - Step 6: Final answer
x = 325,925.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.